This is the new Raspberry Pi HQ camera mounted at prime focus on a William Optics RedCat 250/51 mm telescope. I used a M48-M42 adapter, a 30 mm extension tube, and M42-C_mount adapter chain. The HQ camera module has a 12.3 MP back illuminated Sony IMX477 sensor with 1.55x1.55 micrometer pixels. In addition to higher resolution and lower noise, it is capable of longer exposure times than the previous RPi cams.
Here is the Moon just a day past first quarter from my driveway in Austin at 2020-05-31 02:57 UT. Exposed at ISO 100 for 1/320 sec at f/4.9. The best 10 of 173 images were stacked in Autostakkert! 3, deconvolved in Lynkeos, with final exposure adjustment and crop in Photoshop. Full size image linked below:
The software I've used previously to control the RPi camera from my iPad isn't working yet with the HQ camera. My proof of concept setup was pretty rough with a power cord, full size monitor, and keyboard. I stuck with the Moon images because I wasn't using a tracking mount. The Raspberry Pi was slung from the telescope in a small mesh bag. I'll be working on a more robust mounting for it as well as the software.
Here is a closeup of the RPi cam adaptor mounted to the telescope:
More info about astrophotography with the Raspberry Pi and its camera modules.
Content created: 2020-05-31
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